createCanvas(600, 600);

}

​

function draw() {

  background(220);

  noFill();

  stroke(0);

  let radius = 10;

  let x = width/2;

  let y = height/2;

  let turns = 10;

  let points = 50*turns;  

​

  beginShape();

  for (i=0; i< TWO_PI*turns; i+= (TWO_PI*turns)/points) {

    let cx = x + radius*cos(i);

    let cy = y + radius*sin(i);

​

    vertex(cx, cy);

    radius += 0.5;

  }

  endShape();

}